What is the length of the factory/manufactures oil dipstick for a 91 lumina z34?

Call GM dealer with the vin and order the dip stick!! Salvage yard might sell you one ... Like everybody's been telling you!!!!! By the way... Just what makes you think it's the wrong one in it now????... Just maybe it's the right one and the engine is LOW on oil!!... Drain oil and change filter... Pour in 41/2 qts of oil... Start engine and let it run 30 seconds... Turn engine off and check oil leve... With the dip stick you got now!!!!!!

Call a dealer and get the part number for the dipstick tube and dipstick. Check it against the set in the car.